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Proceedings Paper

Intraluminal fiber-optic Doppler imaging catheter for structural and functional optical coherence tomography
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Paper Abstract

A miniature fiber Doppler imaging catheter for integrated functional and structural optical coherence tomography (OCT) imaging has been developed. The Doppler catheter can be used to map blood flow profile within a vessel as well as image vessel wall structures. The prototype Doppler catheter was demonstrated in measuring the intraluminal velocity profile in a vessel phantom (conduit). A simple mathematical model can be used to estimate the flow profile outside of normal OCT beam penetration. By extending the spatial range of the flow measurements to approximately two times the normal OCT image penetration depth, the total flow rate can then be calculated from the estimated velocity profiles. The measured total flow rate in the vessel phantom obtained from the Doppler imaging catheter correlates well with the calibrated flow values. The Doppler OCT catheter's ability to simultaneously obtain both structural and functional information makes it a potentially powerful device of cardiovascular imaging.

Paper Details

Date Published: 14 June 2002
PDF: 4 pages
Proc. SPIE 4619, Coherence Domain Optical Methods in Biomedical Science and Clinical Applications VI, (14 June 2002); doi: 10.1117/12.470471
Show Author Affiliations
Xing De Li, Massachusetts Institute of Technology (United States)
Tony H. Ko, Massachusetts Institute of Technology (United States)
James G. Fujimoto, Massachusetts Institute of Technology (United States)


Published in SPIE Proceedings Vol. 4619:
Coherence Domain Optical Methods in Biomedical Science and Clinical Applications VI
Valery V. Tuchin; Joseph A. Izatt; James G. Fujimoto, Editor(s)

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